| From | Zi Yan <> | Subject | Re: [PATCH v6 04/51] mm: Move PageDoubleMap bit | Date | Thu, 11 Jun 2020 11:03:00 -0400 |
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On 10 Jun 2020, at 16:12, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)" <willy@infradead.org> > > PG_private_2 is defined as being PF_ANY (applicable to tail pages > as well as regular & head pages). That means that the first tail > page of a double-map page will appear to have Private2 set. Use the > Workingset bit instead which is defined as PF_HEAD so any attempt to > access the Workingset bit on a tail page will redirect to the head page's > Workingset bit. > > Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> > ---
Make sense to me.
Reviewed-by: Zi Yan <ziy@nvidia.com>
— Best Regards, Yan Zi [unhandled content-type:application/pgp-signature] |